340 with Magnum heads

The intake closing point on the XE268 cam is 38 degrees ABDC at .050 and 60 degrees ABDC advertised so now you can figure your dynamic compression.

BTW: What Mopar head gaskets you got. I was getting ready to buy some. If there the ones I'm looking at and you can't use them maybe we can deal. Send me a PM if you don't think you can use them.